Very suitable for your mobile phone, can solve the problem of mobile phone suddenly without electricity for you.
Ii is the best choice for back-up power.
Output Voltage: 3.7V
Charging voltage limit: 4.2V
Compatible with: MANN ZUG 5S Smartphone
1 x 4050mAh Battery for MANN ZUG 5S
you can track your packages after an order has shipped.